3 Replies Latest reply on Dec 14, 2011 9:15 AM by Adolfo_Intel

    Xeon X5680 don't support AES-NI?

    merryhy

      I am using Intel CPU Xeon X5680 and Xeon C5528. When I use IPP sample code of cpuinfo to check the 2 cpus. I found that for both CPUs, the feature flags of "AES" and "CLMUL" all shows 0. I am confused. Does that mean neither of CPUs supports AES-NI? I did see by google that Xeon X5680 supports AES-NI. Please confirm it. Our product with C5528 needs AES-NI advantage which we couldn't see.

       

      the X5680 should be supported AES
      according to << http://ark.intel.com/products/47916/Intel-Xeon-Processor-X5680-(12M-Cache-3_33-GHz-6_40-GTs-Intel-QPI)>>

      For X5680 machine, The motherboard is S5500HC. BIOS version is Version:60;58;30;112  (from S5520HC_S5520SC_EFI_BIOS60_BMC58_FRU30_ME112.zip
      <<http://downloadcenter.intel.com/Detail_Desc.aspx????agr=Y&DwnldID=20591&keyword=%22S5500HC%22&lang=eng>>

       

      I have upgrade new BIOS and Fedora 14.  But whatever there is not AES-NI is supported. ( use cat /proc/info  or IPP cpuinfo,  which read cpu mask, should reflect the real information as Intel® Processor Identification Utility).

       

      Any suggestion?

       

      Thanks

      Ying

       

      p.s

      the latest similiar discuss seems in  http://communities.intel.com/message/110021#110021  :

      S5520HC Bios bug, Virtualization and AES-NI

       

      cpu info.txt

      processor : 0
      vendor_id : GenuineIntel
      cpu family : 6
      model  : 12
      model name : Intel(R) Xeon(R) CPU           X5680  @ 3.33GHz
      stepping : 2
      cpu MHz  : 3333.487
      cache size : 0 KB
      fpu  : yes
      fpu_exception : yes
      cpuid level : 11
      wp  : yes
      flags  : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl est tm2 cx16 xtpr lahf_lm
      bogomips : 6619.13
      clflush size : 64
      cache_alignment : 64
      address sizes : 40 bits physical, 48 bits virtual
      power management:

       

      ipp cpuinfo

      ****************
      The decoded data
      ****************

      ==================
        Signature 
      Stepping ID   2
      Model         12
      Model  + Ext. 44
      Family        6
      Family + Ext. 6
      Type          0

      BrandName
      =================================================
      Intel(R) Xeon(R) CPU           X5680  @ 3.33GHz
      =================================================

      ==============================================================
      IPP would recommend using cpu_p8(y8) code for this processor

      ================
      Feature Flags  
      ================
      Cores         6 - Number of cores per physical package
      CMP / HTT     1 - Multi-Cores and/or Multi-Threading

      MOVBE      0 - MOVBE instruction. For the first time in Atom(TM)
      MMX        1 - Intel(R) Architecture MMX(TM) technology is supported
      SSE        1 - Streaming SIMD Extensions is supported
      SSE2       1 - Streaming SIMD Extensions 2 is supported
      SSE3       1 - Streaming SIMD Extensions 3 is supported
      SSSE3      1 - Supplemental Streaming SIMD Extensions 3 is supported
      SSE41      1 - Streaming SIMD Extensions 4 (SSE4.1) is supported
      SSE42      1 - Streaming SIMD Extensions 4 (SSE4.2) is supported
      STTNI      0 - STTNI Instructions
      EM64T      1 - Intel(R) Extended Memory 64 Technology is supported
      AVX        0 - CPU supports Intel(R) Advanced Vector Extensions instruction set
      AVX_OS     0 - OS supports Intel(R) AVX
      AES        0 - AES instruction is supported
      CLMUL      0 - PCLMULQDQ instruction is supported